verify-is-letter-or-digit-benchmark

Verify is letter or digit (Benchmark in c#)

Verify Is Letter

• WithRegEx: The famous regular expression of whether or not it is in the range of A-Z or a-z
• WithCharIsLetter with the char.IsLetter method
• WithForCompareAsciiValue: traversing char by char and verifying if the ascii value of it is what we need

Verify Is Digit

soon...

Benchmark Results

NET Core 2.2

                 Method     |       Mean |      Error |     StdDev | Ratio | Allocated| 
                 WithRegEx  | 468.929 ns | 18.4859 ns | 53.6309 ns |  1.00 |    104 B |
           WithCharIsLetter |  97.563 ns |  3.3264 ns |  9.4904 ns |  0.21 |     96 B |
   WithForCompareAsciiValue |   9.019 ns |  0.2194 ns |  0.4997 ns |  0.02 |        - |

NET 5 (5.0.2)

BenchmarkDotNet=v0.12.1, OS=Windows 10.0.19042
Intel Core i7-8550U CPU 1.80GHz (Kaby Lake R), 1 CPU, 8 logical and 4 physical cores
.NET Core SDK=5.0.200-preview.20614.14
  [Host]     : .NET Core 5.0.2 (CoreCLR 5.0.220.61120, CoreFX 5.0.220.61120), X64 RyuJIT  [AttachedDebugger]
  DefaultJob : .NET Core 5.0.2 (CoreCLR 5.0.220.61120, CoreFX 5.0.220.61120), X64 RyuJIT

Method	Mean	Error	StdDev	Ratio	RatioSD	Gen 0	Gen 1	Gen 2	Allocated
WithRegEx	268.075 ns	16.196 ns	46.988 ns	1.00	0.00	-	-	-	-
WithCharIsLetter	115.251 ns	7.529 ns	21.482 ns	0.44	0.10	0.0229	-	-	96 B
WithForCompareAsciiValue	9.169 ns	1.097 ns	3.166 ns	0.04	0.01	-	-	-	-